Opera's musicians including Dutch thinker (7)
I believe the answer is:
erasmus
'dutch thinker' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'opera's musicians including' is the wordplay.
'including' indicates a hidden word.
'ERASMUS' can be found hidden inside 'operas musicians'.
Can you help me to learn more?
(Other definitions for erasmus that I've seen before include "Desiderius -, Dutch scholar, humanist" , "Humanist critical of Church" , "Renaissance scholar" , "He praised folly" , "Dutch philosopher" .)